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Tracey M. Clarke, Deanna B. Rodovsky, Andrew A. Herzing, Jeff Peet, Gilles Dennler, Dean DeLongchamp, Christoph Lungenschmied and Attila J. Mozer Significantly Reduced Bimolecular Recombination in a Novel Silole-Based Polymer: Fullerene Blend Advanced Energy Materials 1

Article first published online: 12 SEP 2011 | DOI: 10.1002/aenm.201100390

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Charge transport measurements reveal non-Langevin recombination for KP115:PCBM organic photovoltaic devices. This rare but highly advantageous behaviour allows a long charge carrier drift length and thus devices with thick active layers retain a high fill factor. However, no clear correlation with morphology was found, indicating that the origin of non-Langevin recombination may be more complex than previously thought.

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